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To: vim_dev@googlegroups.com
Subject: Patch 8.1.0552
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
------------

Patch 8.1.0552
Problem:    Saved last search pattern may not be restored.
Solution:   Call restore_last_search_pattern().  Add a check for balancing
            saving and restoring the last search pattern.
Files:	    src/ex_getln.c, src/search.c


*** ../vim-8.1.0551/src/ex_getln.c	2018-11-24 14:27:36.988474753 +0100
--- src/ex_getln.c	2018-11-30 21:43:13.477019050 +0100
***************
*** 462,467 ****
--- 462,468 ----
      int		use_last_pat;
  
      // Parsing range may already set the last search pattern.
+     // NOTE: must call restore_last_search_pattern() before returning!
      save_last_search_pattern();
  
      if (!do_incsearch_highlighting(firstc, is_state, &skiplen, &patlen))
***************
*** 633,638 ****
--- 634,640 ----
      int	    save;
  
      // Parsing range may already set the last search pattern.
+     // NOTE: must call restore_last_search_pattern() before returning!
      save_last_search_pattern();
  
      if (!do_incsearch_highlighting(firstc, is_state, &skiplen, &patlen))
***************
*** 735,740 ****
--- 737,743 ----
      int		skiplen, patlen;
  
      // Parsing range may already set the last search pattern.
+     // NOTE: must call restore_last_search_pattern() before returning!
      save_last_search_pattern();
  
      if (!do_incsearch_highlighting(firstc, is_state, &skiplen, &patlen))
***************
*** 742,747 ****
--- 745,751 ----
  	restore_last_search_pattern();
  	return FAIL;
      }
+     restore_last_search_pattern();
  
      // Add a character from under the cursor for 'incsearch'.
      if (is_state->did_incsearch)
*** ../vim-8.1.0551/src/search.c	2018-11-16 16:21:01.633310065 +0100
--- src/search.c	2018-11-30 21:46:33.771924536 +0100
***************
*** 96,101 ****
--- 96,102 ----
  /* copy of spats[RE_SEARCH], for keeping the search patterns while incremental
   * searching */
  static struct spat  saved_last_search_spat;
+ static int	    did_save_last_search_spat = 0;
  static int	    saved_last_idx = 0;
  static int	    saved_no_hlsearch = 0;
  # endif
***************
*** 364,369 ****
--- 365,375 ----
      void
  save_last_search_pattern(void)
  {
+     if (did_save_last_search_spat != 0)
+ 	IEMSG("did_save_last_search_spat is not zero");
+     else
+ 	++did_save_last_search_spat;
+ 
      saved_last_search_spat = spats[RE_SEARCH];
      if (spats[RE_SEARCH].pat != NULL)
  	saved_last_search_spat.pat = vim_strsave(spats[RE_SEARCH].pat);
***************
*** 374,381 ****
--- 380,395 ----
      void
  restore_last_search_pattern(void)
  {
+     if (did_save_last_search_spat != 1)
+     {
+ 	IEMSG("did_save_last_search_spat is not one");
+ 	return;
+     }
+     --did_save_last_search_spat;
+ 
      vim_free(spats[RE_SEARCH].pat);
      spats[RE_SEARCH] = saved_last_search_spat;
+     saved_last_search_spat.pat = NULL;
  # if defined(FEAT_EVAL)
      set_vv_searchforward();
  # endif
*** ../vim-8.1.0551/src/version.c	2018-11-28 21:20:34.096221686 +0100
--- src/version.c	2018-11-30 21:47:47.412181458 +0100
***************
*** 794,795 ****
--- 794,797 ----
  {   /* Add new patch number below this line */
+ /**/
+     552,
  /**/

-- 
SIGIRO -- irony detected (iron core dumped)

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///